/*******************************************************************************
* Copyright (C) 2014 Maxim Integrated Products, Inc., All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
* IN NO EVENT SHALL MAXIM INTEGRATED BE LIABLE FOR ANY CLAIM, DAMAGES
* OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* Except as contained in this notice, the name of Maxim Integrated
* Products, Inc. shall not be used except as stated in the Maxim Integrated
* Products, Inc. Branding Policy.
*
* The mere transfer of this software does not imply any licenses
* of trade secrets, proprietary technology, copyrights, patents,
* trademarks, maskwork rights, or any other form of intellectual
* property whatsoever. Maxim Integrated Products, Inc. retains all
* ownership rights.
*******************************************************************************
*/
/*============================================================================
 * 
 * Author(s): Maxim Integrated Products
 * Contributors:
 * Date:          
 * Purpose:       
 * Description:
 * 
 *==========================================================================*/
#include <string.h>
#include <errors.h>

#include <mml_sc.h>
#include <libemv.h>

#include <emv_config.h>
#include <emv_slot.h>



int emv_transmit(unsigned char *apdu,
					unsigned int apdu_length,
					unsigned char *response,
					unsigned int *response_length)
{
	int						result;
    emv_slot_t				*slot = emv_get_slot();
    
    /* Check slot number */
    if ( (unsigned int)slot == EMV_FAKE_ADD_PATTERN )
    {
        result = COMMON_ERR_NO_DEV;
        goto emv_transmit_out;
    }
	/* Bug correction #1037 */
    /* Check if the device is initialized */
    else if ( !( slot->status & EMV_STATE_INITIALIZED ) )
    {
    	result = N_SCS_ERR_DEV_NO_SUPP;
        goto emv_transmit_out;
    }
    /* Check parameters */    
    else if ( !apdu ||
    		!response ||
			/* Bug correction #775 */
    		!apdu_length ||
    		!response_length )
    {
        result = COMMON_ERR_INVAL;
        goto emv_transmit_out;
    }
    /* Initialize buffers */
	slot->c_apdu.data = (unsigned char*) apdu;
	slot->c_apdu.length = (unsigned int*) &(slot->n);
	*(slot->c_apdu.length) = apdu_length;
	slot->c_apdu.alloc = apdu_length;
    slot->r_apdu.data = (unsigned char*) response;
    slot->r_apdu.length = response_length;
    slot->r_apdu.alloc = *response_length;
    *(slot->r_apdu.length) = 0;

	if ( slot->protocol == EMV_PROTOCOL_T1 )
	{
		slot->error = emv_t1_transmit(slot);
	}
    else
    { 
		slot->error = emv_t0_transmit(slot);
    }

	if ( slot->error )
	{
		goto emv_transmit_error;
	}
    /* Blocking function if no interrupt handler */
    else if ( !slot->handlers[EMV_EVENT_DATA_RECEIVED] )
    {
         while( slot->status & EMV_STATE_OPERATION_PENDING );
    }        

emv_transmit_error:
    result = slot->error;
emv_transmit_out:
	return result;
}
